Casing support and packing head



Feb. 28,1933 -F. J. HINDERLITER 1,

CASING SUPPORT AND mcxme' Ham I FiledJune 12, 1950 Patented Feb.

1mm 1. or TULSA, oxmnoua' cnsme snrronr am) racxme new Application fled June .12, 1930. Serial No. 4%,713.

My invention relates to tubing and casing supports *or the like employed in connection with oil or gas wells, and particularly with wells producing a large volume of gas at high pressure upon initial flow. A well of this character is lined with casing through which the drill pipe or cable is extended and the casing provided with a head fittinghaving lead line connections, and on which may be mounted a device for supporting the tubing or drill pipe, and means for controlling flow of oil and gas discharged through the casing when the well is drilled into the pro- 1 ducing sands. When the oil or gas is discharged under very high pressure it is difiicult to 'apply controlling apparatus to the casing head or elements mounted on the head, particularly if such application. involves interference with so discharge of fluid from the well.

It is, therefore, the object of my invention to provide means whereby control apparatus may be applied to the well casing through attachment thereof to the elements ordinarily carried on the casing during the drilling operation. r

In accomplishing this object tion I have provided improved details of V structure, the preferred ,forms of which are illustrated in the accompanying drawing,

wherein: I

Fig.1 is a sectional view of a casing support and packing head mounted on the u per end ofwell casing and including an am oring ringembodying my invention.

Fig. 2 is a perspective view of the improved support and acoupling in disassembled relation. Fi 3 is a perspective view of a casing rin provl ded with the anchoring means, g Referring more in detail to the drawing: 1 designates the upper portionof a well hole lined with outer casing 2, sealed therein by cement 3, and projectingabove a cement.

" such as I have described, the entire weight floor 4 at the top of the hole.

Clamped around the casing adj acent i s upper threaded end 5, and resting on the floor,

are la'tes 6 a casing support and packing m heafassembly .7 being threaded on the casmg.

f V of my inven- The packing head 8, of common construction, comprises an annular body having 1 lower internal threads,9 for engaging the end f the casing, and an upper counter-bored and internally threaded end 10 for receiving and seating a top member 11.- 7 Mounted on the top 11 is a casing 12, provided with an upwardly tapering opening 13 for seating sl1ps. 14, having inner series of teeth 15 for supporting an inner string of casing 16, concentric with, and extending upwardly beyond, the outer casing. annular recess 17in the top 11 forms a seating shoulder 18 for packing rings 19, urged into sealing relation with'the inner casing by a reduced and tapered lower end 20 of the casing support, extending into a comsupport c plementary taperedcontinuation of the an-' I nular recess 17 outwardly projecting lugs21 and 22 on the top and support members respectively adapted to receive conventional elevator bails are anchored together by U-bolts 23 hooked over the lower lugs and extended through plates 24, engaging the upper lugs, nuts 25 threaded on the bolts serving to retain the parts in assembled condition.

- The apparatus heretofore described including broadly the tube suspending means and' the elevator bail lugs 21 is of well known con-- struction and does not per se constitute my invention. In order to provide means for attaching control apparatus to equipment of this character I have provideda concentric extension 26 on the upper end of the casing support constituting an anchoring ring, preferably externallythreaded as indicated at 27 for receiving a coupling 28, whereby a conduit 29, equipped with master gates or other suitable control apparatus (not shown), may be secured to the casing support when a well suddenly blows in, due to extreme underground pressures.

It will be apparent that withan apparatus of the outer casing will assist in counteracting ressure from below, thereby providing an a ditional anchorage not obtained in control apparatus commonly supplied. This isaccomplished in part by the novel use of the U-bolts 23 which serve as intermediate securing means for anchoring the control apparatus to the entire weight of the outer casing. In Fig. 3 is shown a casing ring 30 provided 5 with a similar upwardly extendin and externally threaded portion 31' to w ich con- I trol apparatus may be attached in like manner to that heretofore described. 1

What I claim and desire to secure by Letters Patent is o,

1. A combination casing ring and elevator, 1 comprising a casing ring body and laterally extending lugs'on said body undercut for cooperation with-hoisting bails when the ring is'being used as an elevator and having flat tops to have a -U bolt \connectin means snapped thereover, in combination Wltl'l a casing head of a well, and a .U bolt connecting means, said body when used as a casing ring 1 being anchored to said head by said connectmg means. v

2. A pipe elevating apparatus in combination with a casinghead, including laterally "extending lugs, comprising a pipe elevating I ring comprising a ring-like body having grip-' ping means for engaging pipe and lateral ears undercut to receive hoisting bails when the rin is in use as an elevator, and U bolt means or tying said ears to said lugs when the ring is being used as a casin ring to prevent excessive fluid pressures rom raismg said ring away from said head.

3. A pipe elevating apparatus in combination with a casing head including'later'ally' extending lugs, comprising a pipe elevating ring comprising a ring-like body having gripping means for engaging pipe and lateral ears undercut to receive hoisting bails when the ring is in useas an elevator, and U bolt means 40 for tying said ears to said lugs when the'ring is being used as a casing ring to prevent excessive fluid pressures from raising said ring away from said head, said ring-like body having its upper portion formed to have anchored thereto fluid control apparatus. a

In testimonywhereof I 'aflix my signature.

" FRANK J. HINDERLITER. 

